Download instructions for each release (plus the development branch) are contained within the installation documents for each release of Slackware ARM.

Please see the installation page.

The best method to download and keep your Slackware ARM tree up to date is to use rsync. For example, if you wanted to download the Slackware ARM "current" (development) branch:

mkdir slackwarearm
cd slackwarearm
rsync -Pavv --delete ftp.arm.slackware.com::slackwarearm/slackwarearm-current .

Slackware ARM does not distribute ISOs because the majority of the ARM devices do not have CD/DVD drives attached, and even if they can be attached (via a USB port for example), they cannot boot from them.

The best and supported way is to install off a network, exporting the Slackware ARM tree from an NFS server. This procedure is described in the installation documents.

However, once the installer is booted, if you have a USB DVD/CD drive then it is possible to install the packages from it. mkisofs can be used to generate an ISO image which can be burnt to a DVD.

cd slackwarearm-current
mkisofs \
   -udf \
   -o /tmp/slackwarearm-DVD.iso \
   -R -J -V "Slackware ARM current" \
   -hide-rr-moved \
   -v -d -N \
   -A "Slackware ARM DVD" .

The ISO created will be /tmp/slackwarearm-DVD.iso

The primary site is ftp.arm.slackware.com.